It's Li-Ion.
The "he" is me
I did repeat the test, and I was determined to stop it at 3 h to verify that the data loss was due to the shut down. But at the 2:55 mark or so, I got distracted and forgot about it. I think I came back about 3:15, then the same thing occurred, ie., the recorder was off, and when I recovered the files, everything was fine except the last file which was truncated. I can repeat it if you're really interested, but I am pretty sure it is an SLC vs MLC issue at this point.
IIRC, the truncation here was different than the truncations with the MLC CF. With the SLC CF, the music is playable, whereas with the truncated files on the MLC, the data is corrupt. (H2O, can you confirm?)
With the MLC CF cards, I've used a non-UDMA CF card and a UDMA CF card and there was no difference.
I am wondering if the CF mod stories you read are over at head-fi? There, they are using it as a playback device. I don't think anyone has got it to record successfully. The MLC CF allows you to transfer files for playback, and then can play them, no problem. They are kind of funny over there. I read some users ripping a CD, transferring the files to an MR-1, then playing them back and claiming they could hear a difference? I kept wanting to chime in to tell them that it was just the amp section coloring the sound, but then I remembered that they probably just spent $500 on a machine bigger and lower capacity than an iPod. These are the same people that say they can hear a difference between normal wire and cryogenically treated wire.....
Anyway, if you try those super fast cards, let us know. At this point, I have probably invested too much in this and those cards aren't cheap. The other thing is that to write at the high speeds, you need a device that supports UDMA. I'm not sure the MR-1 supports UDMA because it was never designed to take a CF card.
what type/kind of battery is it ? Ni-Mh, Li-Ion...
"With a normal MLC CF, I was able to record 5 h (2-fold gain in battery life)"
...maybe that's what I read - The extended battery life was at a lower resolution.
too bad.
I'll look into the battery.
"Here is the only CF mod that works: http://taperssection.com/index.php?topic=93710.msg1833222#msg1833222"
I re-read the post. I read it once the first time thru the thread.
It really is inconclusive. He said he got 3H 5M out of it but was not able to recover all the data because of power loss/ hard shut down.
Is that due to the shut down or data write error masked by the shutdown.
He was using a Ri-Data 330x 16GB SLC UDMA CF (Read 45Mbs / Write 31Mbs)
Is UDMA a factor to consider ?
was there ever a re-test to confirm what the initial test found ? (scientific method)
I've done a lot of reading on this and it seems the errors may also be caused by an incompatible CF drive due to slower write speeds.
I've read some success stories within all the posts, but the data is inconsistent. I have not read a complete CF mod on the MR-1.
I've read about a lot of HD size upgrades though - like 80 and 120 ?
Here we are discussing the need for close to 100Mb/s write speeds for the CF
and I've read posts that claim they have a working CF mod with a Transend 133X card.(15~40Mb/s)
How is that possible ? Unless they are only using 16bit...? Then that is not a complete mod.
anyway, more research needed.
